Brochure Eckold Clinching (PDF)

6
An unsurpassed range of variations
Stempel Punch
Blech,
Panel,
matrizen-
die-side
seitig
Matrize Die
Blech, Panel, punch-side stempelseitig
CLINCHING
R
for individual problems.
The principle of Eckold Clinching: diagram showing how a clinching element is created,
taking R-DF as an example
Clinching element
Fügeelement
The wide range of variations and the tool concept allows you to choose the right
type of joint for your purposes.
R-DF S-DF H-DF CONFIX clinch
Cutting of sheet neither sheet both sheets one sheet one sheet with
cut cut cut prepunched round hole
Geometry of
clinching element
Benefits /
particular applications
round rectangular rectangular round
- circular, closed element - high economy tools - high economy tools - circular element with
= visually better - anti-twist element - anti-twist element flush finish on die side
- high-strenght - also suitable for - high holding forces = visually better
clinching element clinching more than - element ist closed - symmetry of shear tension
- symmetry of shear two sheets on punch side holding forces
tension holding forces - beneficial when - for clinching pairs of
- particularly clinching sheets materials with
beneficial when with different difficult to form material
clinching sheets with forming behaviour on die side (spring steel)
different forming behaviour (e.g. steel/aluminium) - clinching of sheets with
(e.g. steel/aluminium or different
steel/sandwich) thicknesses
- high holding forces (e.g. 1.0 mm in 4.0 mm)
Possible tool
design
Die-side element
diameter
Punch width S punch width
Anvil diameter
depending on pre-punched
hole diameter
[Tw = twin element] 6 mm 8 mm 10 mm 2 mm 3 mm 4 mm Tw 3 mm 4 mm Tw 5 mm 6 mm
Possible individual sheet thicknesses [mm] 0.5 – 1.5 0.5 – 2.0 1.0 – 3.0 0.5 – 1.25 0.5 – 1.5 0.5 – 2.5 0.5 – 1.5 0.5 – 1.25 0.5 – 1.25 0.5 – 1.25 punch side: 0.7 – 3.0
Possible overall sheet thickness [mm] 1.0 – 3.0 1.0 – 4.0 2.0 – 6.0 1.0 – 2.50 1.0 – 3.0 1.0 – 5.0 1.0 – 3.0 1.0 – 2.50 1.0 – 2.50 1.0 – 2.50 to be checked in each case
Tool life
quantities:
The tool life quantities of the clinching tools can be in the order of 200.000 to 250.000
clinching operations. Customers confirm from tests and typical actual cases
that far greater tool life quantities have been achieved, dependant on the material,
the thickness and the quality.